C280-16 Tier 4 Marine Engine and C280-12 Tier 4 Marine Engine Caterpillar

Cylinder Head - Remove

Usage:

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	207-5034 ⁽¹⁾	Stud Tensioner Tool Gp	1
A	301-5215 ⁽²⁾	Stud Tensioner Tool Gp	1
B	8T-0820	Hydraulic Pressure Gauge	1
	3S-6224 ⁽³⁾	Electric Hydraulic Pump	1
	8S-8033 ⁽³⁾	Electric Hydraulic Pump	1
	9U-6600 ⁽³⁾	Hand Hydraulic Pump	1
	8T-3035	Hydraulic Line	1
C	126-6918 ⁽⁴⁾ or 126-6919 ⁽⁵⁾	Lifting Bracket	1
	126-6920	Handle Rod	1
	5D-1972	Bolt	2
D	229-3639	Overhaul Protection Gp	1
E	126-6920	Handle Rod	1

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^( 1 )	Operating pressure is 40000 ± 1520 kPa (5800 ± 220 psi).
^( 2 )	Operating pressure is 125000 ± 4920 kPa (18130 ± 715 psi).
^( 3 )	There are three pumps that are listed in the tool chart. Any one of the pumps may be used for this procedure.
^( 4 )	Use with V-engines
^( 5 )	Use with In-line engines

Start By:

Remove the exhaust manifold shields.
Remove the fuel injector.
If necessary, remove the engine lifting bracket.

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

Note: Make sure that the starting system is disabled.

Note: Tooling (D) provides all the protective covers and plugs for one cylinder. Use these protective covers in order to maximize the protection during these procedures.

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Illustration 1	g00639819

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Illustration 2	g01314173

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Personal injury or death can result from the engine starting.
The engine can start and injure persons working on or near the engine.
Be sure the engine cannot be started while service work is being performed. This is very important when the engine is equipped with an Automatic Start Stop System.

On engines equipped with an air starting system, close the air supply valve to the air starting motor before service work is begun.

Drain the coolant. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining procedure.

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Illustration 3	g01299469

Remove water manifold segment (2) in order for the cylinder head to be removed.

Remove exhaust manifold section (1) in order for the cylinder head to be removed.

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Illustration 4	g01299470

Remove oil supply tube assembly (3) .

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Illustration 5	g01299474

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NOTICE

Use the proper procedure in order to apply tension to the cylinder head studs. Failure to follow the correct procedure will result in damage to the cylinder head assembly and the cylinder block assembly.

Note: Tooling (A) has a guard that is not used in the photo.

Place pedestals (7) over the cylinder head nuts. These pedestals are a part of Tooling (A) .

Place hydraulic cylinders (6) over the pedestals. These cylinders are a part of Tooling (A) .

Attach Tooling (B) to Tooling (A) .

Install collars (4). Tighten these collars with a ratchet lever (1/2 inch drive). These collars are a part of Tooling (A) .

Loosen the collars to 1 1/2 turns.

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Personal injury can result from oil under high pressure.
DO NOT allow high pressure oil to contact skin.

Wear appropriate protective equipment while working with high pressure oil systems.

Note: The stud tensioner tool groups in Tooling (A) require different operating pressure.

Run the pump in Tooling (A) until the operating pressure is registered on the gauge.
Note: This procedure may require more pump pressure which will depend on the temperature of the engine.

Use dowel handle (5). Place the dowel handle through the slot in each adapter. Use the handle in order to turn the nut until the nut contacts the collar. This is equivalent to the passing of 12 holes.

Slowly release the hydraulic pressure and remove Tooling (A) .

Remove the nuts and washers from the cylinder head studs.

Use the bolts that hold the rocker arm shaft in place. Attach Tooling (C) to the rocker arm support on the cylinder head.

Attach a suitable lifting device to Tooling (C). The weight of the cylinder head is approximately 204 kg (450 lb).

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Illustration 6	g01299478

Before cylinder head (8) is lifted, use Tooling (E), a suitable sized block, and a pry bar in order to loosen cylinder head (8) .

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NOTICE

Pry only where shown in the preceding photo. Do not pry against the coupling assembly.

Carefully raise cylinder head (8) on the cylinder head studs, and remove the cylinder head.

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Illustration 7	g01299480
Cuffed liner

Note: Steps 18 and 19 are for engines with cuffed liners.

Remove seal plate (9) and seal plate (11). Remove the seal adapters from the cylinder head studs. Remove the O-ring seals from the seal plates and remove the O-ring seals from both sides of the seal adapters.

Remove combustion gasket (10) from the cylinder liner.

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Illustration 8	g00639838

Measure the thickness of combustion gasket (12) all the way around. Refer to Specifications, "Cylinder Head, Valves, Valve Springs, and Valve Seal Inserts" for more information.